Look at the front and rear. Apprenticeship bus is a bus of Chongqing Transportation Group, which provides students with "point-to-point" customized direct service. There will be license plates before and after the direct bus. License plate, commonly known as license plate, also refers to vehicle number plate. It's a board hanging on the front and rear of the car respectively. It is usually made of aluminum, iron, plastic or paper, with the registration number, registration area or other relevant information engraved on it.